78784704 has 112 divisors (see below), whose sum is σ = 234086400. Its totient is φ = 25982208.

The previous prime is 78784691. The next prime is 78784709. The reversal of 78784704 is 40748787.

It is a self number, because there is not a number n which added to its sum of digits gives 78784704.

It is not an unprimeable number, because it can be changed into a prime (78784709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219277 + ... + 219635.

Almost surely, 2^78784704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78784704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117043200).

78784704 is an abundant number, since it is smaller than the sum of its proper divisors (155301696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78784704 is a wasteful number, since it uses less digits than its factorization.

78784704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 351232, while the sum is 45.

The square root of 78784704 is about 8876.0748081570. The cubic root of 78784704 is about 428.6938987134.

It can be divided in two parts, 787 and 84704, that added together give a triangular number (85491 = T₄₁₃).

The spelling of 78784704 in words is "seventy-eight million, seven hundred eighty-four thousand, seven hundred four".